This page lists 34 geological features that start with W, from “Wadi” to “Wombeyan Caves”. They include caves, volcanic fields, mountain ranges, cliffs, dunes, and rock formations found on every continent. Some are small, like a “Weathering Pit”, while others cover whole regions. Learning about them helps you understand how water, wind, heat, and moving plates shape the land, and it gives you ideas for travel, study, or a school project.
Geological features are the natural landforms and rock structures that make up the surface of the Earth and the ground beneath it. They form over thousands or millions of years through erosion, volcanic activity, and the slow movement of tectonic plates. The “White Cliffs of Dover” are a famous example, made from tiny sea creatures that lived about 90 million years ago.
Below you’ll find the table with the geological feature, its region, its characteristics, and a short description.
Geological Feature: The name of each landform or rock structure, listed alphabetically so you can quickly find the one you want to look up.
Region: The country, state, or part of the world where you can find the feature, which helps you locate it on a map or plan a visit.
Characteristics: A few key traits that set the feature apart, such as its rock type, shape, or the process that formed it.
Description: A short summary explaining what the feature is, how it formed, and why it is notable, so you get the full picture at a glance.
Geological features
| Geological Feature | Region | Characteristics |
|---|---|---|
| Wadi | Middle East and North Africa | Dry riverbed, flash floods |
| Wadi Rum | Jordan | Sandstone and granite valley, rock arches |
| Waimangu Volcanic Rift Valley | New Zealand | Geothermal valley, hot springs |
| Wai-O-Tapu | New Zealand | Geothermal area, colorful hot pools |
| Waitomo Caves | New Zealand | Limestone caves, glowworms |
| Walvis Ridge | South Atlantic Ocean | Underwater ridge, volcanic hotspot track |
| Wasatch Fault | Utah, USA | Normal fault, active earthquake zone |
| Wasatch Range | Utah and Idaho, USA | Fault-block mountains, glacial valleys |
| Water Gap | Worldwide, especially Appalachians, USA | Gorge through a ridge, river-cut |
| Waterfall | Worldwide | Falling water, cliff or ledge |
| Water Table | Worldwide | Underground boundary, saturated zone |
| Wave-Cut Notch | Coastlines worldwide | Undercut cliff base, marine erosion |
| Wave-Cut Platform | Coastlines worldwide | Flat rocky shelf, tidal zone |
| Wave Rock | Western Australia | Granite formation, wave-shaped cliff |
| Weald | Southeast England | Eroded dome, clay and sandstone ridges |
| Weathering Pit | Arid regions, especially Utah, USA | Rock depression, holds rainwater |
| Weeping Rock | Zion National Park, Utah, USA | Seep spring, sandstone alcove |
| Welded Tuff | Volcanic regions worldwide | Fused volcanic ash, hard rock |
| Whaleback | Arid regions, Australia and Africa | Smooth rounded rock, elongated dome |
| Whin Sill | Northern England | Igneous intrusion, dolerite ridge |
| White Cliffs of Dover | Kent, England | Chalk cliffs, marine fossils |
| White Sands | New Mexico, USA | Gypsum dunes, desert basin |
| Williston Basin | North Dakota, Montana, and Canada | Sedimentary basin, oil-rich |
| Wilson Cycle | Worldwide | Plate tectonics, ocean opening and closing |
| Wind Cave | South Dakota, USA | Limestone cave, boxwork formations |
| Wind Gap | Appalachian Mountains, USA | Dry mountain pass, abandoned river channel |
| Window (Natural Arch) | Arches National Park, Utah, USA | Rock opening, sandstone erosion |
| Windblown Dune | Deserts and coasts worldwide | Sand ridge, shaped by wind |
| Wizard Island | Crater Lake, Oregon, USA | Cinder cone, volcanic island |
| Wrangell Volcanic Field | Alaska, USA | Large shield volcanoes, glaciers |
| Wrangellia | Alaska, Yukon, and British Columbia | Accreted terrane, ancient volcanic island chain |
| Wudalianchi Volcanic Field | Heilongjiang, China | Volcanic cones, barrier lakes |
| Wulingyuan | Hunan, China | Sandstone pillars, karst peaks |
| Wombeyan Caves | New South Wales, Australia | Marble caves, stalactites |
Descriptions
Wadi
A valley or channel that stays dry most of the year but fills with water during sudden rainstorms. Wadis are common in desert regions and often serve as natural travel routes.
Wadi Rum
A desert valley in southern Jordan with towering sandstone cliffs, natural arches, and red sand. It is often called the Valley of the Moon.
Waimangu Volcanic Rift Valley
A geothermal area created by the 1886 Mount Tarawera eruption. It contains hot lakes, steaming cliffs, and the world’s largest hot spring, Frying Pan Lake.
Wai-O-Tapu
A thermal wonderland near Rotorua known for its bright, mineral-stained pools and bubbling mud. The Champagne Pool is its best-known feature.
Waitomo Caves
A limestone cave system famous for glowworms that light up cave ceilings like a starry sky. The caves contain stalactites, stalagmites, and underground streams.
Walvis Ridge
A chain of undersea mountains stretching from the coast of Namibia toward the middle of the Atlantic. It formed as the seafloor moved over a volcanic hotspot.
Wasatch Fault
A major active fault running along the base of the Wasatch Range. Its slow movement over millions of years has lifted the mountains above Salt Lake City.
Wasatch Range
A mountain range in the Rocky Mountains, raised by movement along the Wasatch Fault. Its steep peaks and canyons rise right above Utah’s largest cities.
Water Gap
A narrow pass where a river cuts through a mountain ridge. The Delaware Water Gap is a well-known example.
Waterfall
A place where a river drops over a vertical or steep section of rock. Waterfalls form where harder rock sits above softer rock that erodes more quickly.
Water Table
The level below the ground where soil and rock are fully saturated with water. It rises and falls with rainfall, drought, and groundwater use.
Wave-Cut Notch
A groove carved into the base of a sea cliff by waves hitting the same level again and again. Over time, the notch can cause the cliff above to collapse.
Wave-Cut Platform
A flat rock surface at the foot of a cliff, left behind as waves wear the cliff back. It is often visible at low tide.
Wave Rock
A 14-meter-high granite cliff shaped like a breaking ocean wave. It was sculpted by weathering and erosion beneath the soil over millions of years.
Weald
A region of southeast England formed when an ancient dome of rock was eroded, exposing layers of clay and sandstone. It sits between the North and South Downs.
Weathering Pit
A small basin in solid rock formed as water collects and slowly dissolves or breaks down the surface. Some pits become temporary habitats for tiny aquatic animals.
Weeping Rock
A rock alcove where groundwater seeps through sandstone and drips from the overhang. Hanging gardens of ferns and flowers grow along the wet wall.
Welded Tuff
A rock formed when hot ash and pumice from an eruption settle and fuse together under their own heat and weight. It can form thick, hard layers.
Whaleback
A long, rounded rock outcrop shaped like the back of a whale. Whalebacks are often made of granite and shaped by weathering.
Whin Sill
A sheet of hard volcanic rock that cooled underground and was later exposed by erosion. Hadrian’s Wall was built along part of its high cliff edge.
White Cliffs of Dover
Tall chalk cliffs along the English Channel, made from the remains of tiny sea creatures that lived about 90 million years ago. They are a famous symbol of Britain.
White Sands
A huge field of bright white dunes made of gypsum, a mineral that is rare as sand. The dunes sit in the Tularosa Basin and are the largest of their kind in the world.
Williston Basin
A large bowl-shaped depression in the Earth’s crust filled with thick layers of sedimentary rock. It holds major oil and natural gas reserves.
Wilson Cycle
The repeating process in which ocean basins open and close as continents split apart and collide. It describes how plate tectonics reshapes the planet over hundreds of millions of years.
Wind Cave
One of the longest caves in the world, known for its rare boxwork formations, which resemble honeycomb patterns. It gets its name from air flowing in and out of its small natural entrance.
Wind Gap
A notch in a ridge where a river once flowed but has since changed course. Wind gaps are now dry passes that often serve as roads over mountains.
Window (Natural Arch)
A large opening in a rock fin or wall created by weathering. The North and South Windows in Arches National Park are among the best-known examples.
Windblown Dune
A mound or ridge of sand piled up by the wind. Dunes move slowly and take different shapes depending on wind direction and sand supply.
Wizard Island
A small volcanic cone rising from the water of Crater Lake. It formed after the collapse of Mount Mazama, which created the lake’s caldera.
Wrangell Volcanic Field
A huge volcanic area in southeastern Alaska that includes Mount Wrangell, one of the largest active volcanoes in North America. It sits among glacier-covered peaks.
Wrangellia
A chunk of crust that began as volcanic islands in the Pacific and was added to North America by tectonic collision. It carries copper-rich rocks and fossils from far away.
Wudalianchi Volcanic Field
A group of dormant volcanoes in northeast China that last erupted in the 1700s. Lava flows dammed rivers to form a chain of lakes.
Wulingyuan
A scenic area of thousands of tall quartz-sandstone pillars shaped by erosion. It is a UNESCO World Heritage Site and helped inspire the floating mountains in the film Avatar.
Wombeyan Caves
A system of caves cut into rare marble, decorated with stalactites, stalagmites, and flowstone. They lie in the Southern Highlands of New South Wales.